Name: Union Pacific Hillsboro Division
Scale: HO (1:87.1)
Size: 20′-0″ x 20′-0″
Prototype: Union Pacific and Portland & Western RRs
Period: 1990 to the present
Style: shelf
Mainline run: 50 feet
Minimum radius: 36″
Minimum turnout: no. 4
Click here to download a PDF of this track plan
This gives some good ideas for a shelf layout. The yard has a lot good ideas.